This method regulates speed by changing the number of steps of the additional resistor in the rotor circuit, so it's hard to realize smooth speed-regulation, also its performance is poor.
Which it adopted the regulation on product viscosity can smooth out sharp and full of like two different results.
其中通过对产品粘度的调节，可以拉出尖状和圆滑饱满两种不同的效果。
3
This paper gives a brief description on the properties, regulation, signal transduction pathways, pharmacology and functional significance of nonselective cation channels in smooth muscles.